Node.js powers a huge slice of the modern web — from APIs and microservices to real-time apps and serverless functions. This course teaches you Node.js the way it's actually used in production: starting from the runtime and event loop, and building up to writing scalable, asynchronous backend services.

What you'll learn

• How the Node.js runtime, V8, and the event loop actually work
• The module system: CommonJS, ES modules, and resolution rules
• Asynchronous programming with callbacks, promises, and async/await
• Working with npm, package.json, and dependency management
• Core modules: fs, path, http, events, stream, buffer
• Building HTTP servers and REST APIs with Express
• Streams, buffers, and handling large payloads efficiently
• Error handling, debugging, and performance tuning
• Testing, security basics, and deploying Node.js apps

How it works

Each topic is reinforced with carefully curated multiple-choice questions that test how Node.js really behaves — including the quirks of the event loop, the difference between process.nextTick and setImmediate, and the subtle gotchas of async code. You learn by reasoning about real code, not by passively watching videos.

Who this is for

Frontend developers moving into backend work, full-stack engineers leveling up their Node.js skills, computer science students learning server-side JavaScript, and anyone preparing for Node.js or full-stack interviews.